In order to be confident that your table saw is safe, up to standards, and in good running condition it is a good idea to buy it new. However, you can get a great deal on a used table saw and have the same confidence. When purchasing a used table saw check out the weight. The old rule of thumb is ‘the heavier the table saw-the better the quality'. Check out the motor, different size motors cutting different thickness of wood. Just like a car, make sure the seller is ready to give you a test drive. Cut a few pieces of wood on your own to try it out. Try not to buy sight unseen. Remember to add in the expense and trouble you may have hauling a large table saw from seller to your home. Either way, safety is first. Whether new or used, comparison shop and read online reviews of different brands. It is better to buy a new table saw. Used table saws can be dull and the teeth on it can be crooked and broken. A new table saw is always sharper and better.